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What Is GCLID?

GCLID stands for Google Click Identifier. Think of it as a unique digital "receipt" or "tracking number" that Google Ads generates for every single click your ad receives.

When a user clicks your ad and lands on your website, this unique ID is automatically attached to the URL in the browser's address bar. It looks something like this: www.yourwebsite.com/?gclid=Cj0KCQj...

Why GCLID is Crucial for Fraud Protection

This unique identifier is the critical link that allows ClickSambo to connect your ad spend in Google to the actual user behavior on your site.

Here’s why it's so important:

Ironclad Attribution: The GCLID provides undeniable proof that a specific website visit originated from a specific ad click. This allows us to know exactly which campaign, ad group, or keyword is responsible for the traffic.

Enhanced Data Analysis: By capturing the GCLID, we can tie the detailed behavioral analysis of a visitor (their mouse movements, engagement, on-site journey) directly back to the click they came from. This is vital for distinguishing a genuine customer from a sophisticated bot.

Accurate Reporting: Since the GCLID is Google's own parameter, using it ensures our data aligns perfectly with your Google Ads reports, providing consistency and accuracy when identifying and blocking fraudulent sources.

In essence, without the GCLID, it's impossible to reliably connect a website visitor to the specific ad they clicked, making robust fraud detection impossible.